Multifunctional off-line cleaning device for reverse osmosis membrane

Abstract

The invention discloses a film water curing technique of multifunctional hyperfiltration film off-line purifier, which is characterized by the following: the pollution in reverse osmosis membrane system is cleared by carrying out the techniques of film positive washing, negative washing and pure water side pressurization washing; the invention can evaluate and test agent and reverse osmosis membrane property by imitating field producing water condition.

Description

Technical field: [0001] The invention relates to membrane water treatment technology. It is a multifunctional off-line cleaning device for reverse osmosis membranes. Through the technical implementation of new concepts such as single membrane forward washing, backwashing and pure water side pressure, the pollution in the reverse osmosis membrane system can be completely removed, and the invention also By simulating on-site water production conditions, the performance of chemicals and reverse osmosis membranes can be evaluated and tested. Background technique: [0002] At present, reverse osmosis technology has become more and more popular, and it is more and more used in sewage reuse, seawater desalination, food, chemical and other industries. With the diversification of uses, the situation of reverse osmosis membrane pollution is becoming more and more complicated, and the degree of pollution is also increasing. Seriously, many reverse osmosis membranes are depleted, which...

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Problems solved by technology

[0002] At present, reverse osmosis technology has become more and more popular, and it is more and more used in sewage reuse, seawater desalination, food, chemical and other industries. With diversified uses, the situation of reverse osmosis membrane pollution is becoming more and more complicated, and the degree of pollution is also increasing. Seriously, many reverse osmosis membranes are depleted, which causes the pressure difference of the membrane elements to rise during the working process, the desalination rate and flow rate drop, and even fail to work normally. On-line routine cleaning can no longer completely solve the problem of membrane fouling, resulting in the system having to be replaced with new ones. Membrane elements, causing unnecessary waste of cost

[0003] At present, there are many molded products of offline cleaning equipment, but it is often only an improvement of single membrane operation for the inconvenience of cleaning caused by the series connection of several sets of membrane elements in the system. Although this cleaning equipment is suitable for off-line cleaning of generally polluted elements, However, for some membrane elements with special pollution or serious pollution, there is often nothing that can be done.

In addition, the types of reverse osmosis chemicals are becoming more and more complicated. The selection of suitable antiscalant products is the basic guarantee for prolonging the life of reverse osmosis membrane elements. There are formed cleaning equipment, which can only conduct a simple and immediate test on the situation after cleaning at that time, and cannot provide reasonable suggestions for the on-site operation of the reverse osmosis membrane in the future

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